officiating
v.
行使（职务）( officiate的现在分词 );
主持（宗教仪式）;
例句:
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If satisfied, the officiating abbot admits the postulant.
来自BBC
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You wanted him as the bridegroom, not as the officiating cleric.
你想把他作为你的新郎, 而不是一个履行公事的神父.
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The officiating priest was a Franciscan friar.
来自Discovery
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The officiating guests also officiated the Pledge Ceremony of the exchange tour.
主礼嘉宾在典礼中同时主持北京交流团的誓师仪式.
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And let's get one thing straight : there will always be officiating errors.
我们必须很清楚地知道: 判罚有误是很正常的事情.
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Football and rugby union have provided these two conundrums about officiating.
来自THETIMES